The remaining oil distribution plays an important role in enhanced oil recovery (EOR), which
directly guides the development of an oil reservoir in the middle and later stages. However, it …

A model of the wellbore dynamics for CO 2 injectors may be essential for effective risk
assessment and mitigation planning for CO 2 injectors in CO 2 geological storage and …

Water hammer pressure has been known to cause formation fracture and well-control
problems. Accurate prediction of water hammer pressure is crucially important to determine …

If an overflow occurs, the well must be closed immediately. To ensure the safety of the
drilling wellbore in ultra-deep wells, it is critical to analyze the transient flow process and …

Hydraulic vibrator is a useful tool to reduce the mechanical friction and increase the lateral-
reach in coiled tubing drilling (CTD). This paper proposes an unsteady friction model to …

Gas influx detection is one of the most important ways to improve well control safety. The
responses of annular pressure while drilling (APWD) measurements have been used to …

With the deepening of exploration and development of oil and gas resources, more complex
oil and gas reservoirs have been found, and oil and gas well drilling has gradually …

With easily accessible oil reserves dwindling, petroleum engineers must have a sound
understanding of how to access technically challenging resources, especially in the …

Transient two-phase flow in pipes and wellbores appears in several processes in petroleum
industry. Predicting pressure, temperature and composition behavior during offshore well …

The problem on the natural vibrations of the liquid column in the production string of a
vertical oil well in a stratum, arising as a result of a sudden opening-out or a sudden closing …